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(No Model.)

O. C. VELIB.

BLIND ADJUSTER.

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R 0 T W. V N I..

ATTORNEY n. FEYERS. PhamLxmgl-apher. wafhingum. u. c.

i UNITED STATES PATENT OFFICE.

v ORVEL C. VELIE, OF OORNING, NEW YORK, ASSIGNOR OF ONELHALF TO JOHN N.HUNGERFORD, OF SAME PLAGE.

BLIND-ADJUSTER.

SPECIFICATION forming part of Letters Patent No; 256,254, dated April11, 1882. Application tiled February 10, 188%. (N o model.)

To all whom 4it may concern Be it known that I, ORvEL C. VELIE, of

Corning, in the county of Steuben and State of New York, have inventedcertain new and use- 5 ful Improvements in Blind-Adjusters; and Idohereby declare that the followin gis a full, clear, and exactdescription ottheinvention, which will enable others skilled in the artto which it appertains to make and use the same, reference being had tothe accompanyin gdrawin gs, which form a part of this specification.

My invention relates to certain new and useful improvements in mechanismfor operating the slats of blinds, by which the ordinary rod connectingthe slats may be dispensed with, whereby I am enabled to use glass inthe manufacture of the slats, as well as wood or metal; and to this endthe invention consists in novel features of construction and combinationand arrangement of parts, all as will be hereinafter fully described,and set forth in the claims hereto annexed.

Referring to the accompanying drawings, Figure l represents an elevationofthe blind 5 Fig. 2, a vertical section through the line w ac ofFig. 1. Fig. 3 is a cross-section through the line y y, Fig. 1- Fig. 4,detailed front and end view of one of'the slats.

In the drawings, A represents the stiles or frames of an ordinaryVenetian blind, having mortises B in the inner sides of the verticalstiles for the tenons C on the blind-slats D. The tenons G at one end ofall the slats are provided with grooves d, which correspond with theshape ot' a series of lugs or teeth, e, on a bar, E, arranged in arecess in one ot' the stiles over the mortises B, and which lugs orteeth lare so arranged on the bar E that one lug or tooth will it inthegrooved tenon'of each slat. The recess f for the reception of .thebar E is made a short distance longer than said bar, in order that saidbar may have the necessary vertical playin the operation of opening andclosing the slats. The lower end of the bar E is provided with a stud,g, projecting out through a vertical slot, h, in the stile, .and whichstud is provided with a knob,

t', by means of which the bar may be operated. By having the tenons oftheslats at one and the same ends grooved as. shown, and the lugs orteeth 'of the vertically-movable bar engaging therewith, the slats areall operated simultaneously, and thereby respectively opened or closedinthe downward or upward movement gf said har.

By the above-described construction a blindslat adjuster is perfectedwhich is at once ,simple in operation and not liable to get out oforder.

In the use ot wooden sla-ts metal tenons may be used, or wooden tenonshaving the grooves therein lined with sheet meta-l to obviate wear.

In the use ot' metal, glass, or similar material for slats the tenonsmay be formed integraltherewith and the grooves therein in the processof manufacturing the same.

of the slats having grooved tenons at one end and a vertically-movablebar having a series of lugs or teeth adapted to engage said groovedtenons, whereby the slats may be simultaneously operated by the movementof said bar, substantially in the manner herein shown and described.

2. The combination ofthe blind-frame having mortises B and a recess,f,and slot h, the slats D, having tenons. O, provided with grooves d atone end, and a vertically-movable bar, E, having lugs or teeth e,adaptedto engage said grooved tenons, and a projecting stud, g, providedwith a knob, t', the several parts constructed and arranged relativelyto each other substantially in the manner as and for the purpose hereinshown and described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in

